US2863358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic lens mount
Assignee: WOLLENSAK OPTICAL CO
•
Filing: 1955-01-03
•
Granted: 1958-12-09
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 George K Czarnikow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:31
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2026724A
Cited
US2180027A
Cited
US2287468A
Cited
US2293592A
Cited
US2307345A
Cited
US2500050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |